Length: 125mm ​Material: high-carbon steel ​ ​Features: ​Good quality: Made from high-carbon steel, sturdy and high hardness, automatic center punch is a tool with a conical point, which is used making an indentation in an object; ​ ​Convenient to use: This punch has a mechanism that automatically strikes a blow when downward pressure is applied; No hammer is required. ​ ​Multi use: Actually works and makes a solid mark in wood, metal, steel, aluminum, brass, copper and more ​ ​Non slip: With textured handle, ergonomic and non slip, comfortable to grip, easy to control. ​ ​Notes: ​1. Please allowed 1-3mm differences due to manual measurement, thank you for your understanding! ​2. Due to the difference between different monitors, please understand that the picture may not reflect the actual color of the item.